Home / 135,310.20-186,803.14-81,608.76

Finding the Fourth Proportional to 135,310.20, 186,803.14 and 81,608.76

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Solution

The fourth proportional to 135,310.20, 186,803.14 and 81,608.76 is: 112,665.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,310.20 : 186,803.14 = 81,608.76 : x
  2. Step 2: Convert to fraction form
    135,310.20/186,803.14 = 81,608.76/x
  3. Step 3: Cross multiply
    135,310.20x = 186,803.14 × 81,608.76
  4. Step 4: Simplify right side
    135,310.20x = 15,244,772,619.51
  5. Step 5: Solve for x
    x = 15,244,772,619.51/135,310.20
  6. Step 6: Final answer
    x = 112,665.36

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.